Ski boot



FIG. 1 is a front view of the ski boot showing my new design;

FIG. 2 is a back view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is another perspective view thereof.

The broken lines show portions of the article not claimed and form no part of the claimed design. 

CLAIM The ornamental design for ski boot, as shown and described. 